[rules-users] NullPointerException when load file rules

[Swindells, Thomas]

Looking at the stack trace, if you are on the same version as drools as me it looks like it is this line
this.rule.setDialect( getDialect().getId() );

The most likely reason is your DRL isn't valid - perhaps where you are specifying the dialect, or it could be your
Dependencies aren't right or something.
Which version of drools are you using. Have you tried reducing your DRL file to the minimum that generates the error - then post that DRL if you need further help.

Thomas

> -----Original Message-----
> From: rules-users-bounces at lists.jboss.org [mailto:rules-users-
> bounces at lists.jboss.org] On Behalf Of jjmartinez
> Sent: 10 January 2012 17:05
> To: rules-users at lists.jboss.org
> Subject: Re: [rules-users] NullPointerException when load file rules
>
> Anybody can help me? I don't know why my application show these errors.
>
> Thanks in advance!
>
> java.lang.NullPointerException
        at org.drools.rule.builder.RuleBuildContext.<init>(RuleBuildContext.java:88)
        at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1149)
        at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:636)
        at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:266)
        at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:458)
        at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
        at drools.ejemplos.DroolsTest.readKnowledgeBase(DroolsTest.java:85)
        at drools.ejemplos.DroolsTest.execute(DroolsTest.java:64)
        at drools.ejemplos.DroolsTest.<init>(DroolsTest.java:56)
        at drools.ejemplos.Activator.start(Activator.java:14)
        at org.knopflerfish.framework.BundleImpl.start0(BundleImpl.java:356)
        at org.knopflerfish.framework.BundleThread.run(BundleThread.java:107)


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